Pipe-peening machine.



J. I. PILSTON. PIPE PEENING MACHINE.

APPLIOATION FILED NOV.7,1912.

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J. 1. PILSTON.

PIPE PEENING MACHINE.

APPLICATION FILED NOV. 7, 1912.

1,079,065, Patented N0v.18, 1913.

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J. I. PILSTON. PIPE PBENING MACHINE.

APPLICATION FILED NOV. 7, 1912.

1,079,065, Patented Nov. 18, 1913.

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WITNESSES W I W6 W k W W ATTORNEY J. I. PILSTON. PIPE PEENING MACHINE.

APPLICATION FILED NOV. 7, 1912.

1 Q79 065 Patented Nov. 18, 1913.

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\NVENTOR ATTORNEY arr-En STAT JOHN I. PILSTON, OF WYANDOTTE, IVIICHIGAN.

PIPE-PEENING MACHINE.

Application filed November 7, 1912.

To all whom it may concern Be it known that I, JOHN T. PlLsroN, a citizen of the United States, residing at lVyandotte, county of WVayne, State of Michigan, have invented a certain new and useful Improvement in Pipe-Peening Machines, and declare the following to be a full, clear, and exact description of the same, such as will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

This invention is a machine for expanding pipe into flanges.

The novel features of construction and the novel combination of structures producing certain functions will more fully appear in the specification hereinafter following.

In the drawings: Figure 1, is a longitudinal section of the pneumatic hammer holder, the hammer cylinder being shown in elevation. Fig. 2, is an end elevation of a hammer holder and cylinder. Fig. 3, is a sectional detail of the hammer holder showing the coupler inverted to extend the radius of operation of a hammer. Fig. 4, is a side elevation of a hammer holder and cylinder, the pipe line being sectioned and shown attached at the central recess. The dotted lines indicate the operating range of the hammer. Fig. 5, is a side elevation taken from the left of Fig. 4 and shows the pipe expanded into the flange. Fig. 6, is a vertical section of the support. Fig. 7, is a top plan view of the support. Fig. 8, is a front elevation of the support. Fig.

9, is a section on the line 9-9 of Fig. 8. Fig. 10, is a section on the line 1010 of Fig. 6. Fig. 11, is a detail of one of the flange alining studs.

Expanding pipe into pipe flanges has ordinarily been done by hand. This invention is directed to a pneumatic hammer adapted to perform this function and a support for the work and for the hammer. The hammer will first be described and then the support, it being understood pneu- Speeification of Letters Patent.

Patented Nov. 18, 1913.

Serial No. 729,988.

matic refers not only to air but other gases that might be used to work the hammer.

The holder A is a cylindrical receptacle in the wall of which is a passage way 1 communicating with the exterior at the ports 2 and 3. The passage way communicates with the interior of the holder by the ports 4 at the juncture of the bottom and the side walls. In making the borings to form this passage way, the exterior walls of the cylinder are pierced at two places and screw-plugs 5 and 6 are inserted in these to close the apertures. The openings of the ports 2 and 3 flare out forming countersunk portions 2 and 3 adapted for the reception of off-set members 2 and 3 that are located on the face of the coupler B. This coupler is attached to the holder A by screw-bolts 7 and by loosening these, the same may be readily removed and inverted, changing the offset 2 to the counter-sunk cavity 3 (as shown in Fig. This brings the passage way 8 of the coupler into registry with the port 3 and closes the port 2. This, of course, increases the radius of the holder by the distance between the cen ters of the ports 2 and 3.

Referring to Fig. 4, the tool will be seen shown in elevation and in connection with the circle that it will describe in revolution when the pipe line is connected with the port 2. It will readily be seen that by connecting the pipe line with the port 3 the radius of this circle will be increased. The pipe line immediately connecting with the coupler comprises an integral conduit 9 that projects perpendicularly from the coupler B and has at its end an enlarged annular recess 10 beyond which are threads 11. This annular recess 10 is adapted to receive a collar 12 on the pipe 13. 14 is a packing which is pressed against the collar 10 by turning the packing gland 15 against it. This forms a swivel coupling that allows the holder to be turned for the purpose of doing such work as peening a pipe G into the flange D.

Referring to Fig. 1, it will be seen that on the opposite side of the holder A from the coupler B, there is an internally threaded off-set 16 in which may be secured a handle 17 by which a workman at the opposite end of the pipe may hold the hammer in operative position by the aid of the workman in charge of the operation. The hammer 18 is attached to a piston, (not shown) that reciprccates in the cylinder.

It is a feature of my invention to construct the casing of the cylinder E in two sections of unequal diameters, that section lying nearer the closed end of the holder being of larger diameter so as to form a ledge 19 which abuts against the end of an adjustable member or nut 20 that is in the form of a threaded nut engaging the internal threads 21 in the outer half of the holder and which has a long sleeve that reaches to the exterior of the holder and may be engaged by a spanner wrench. The inner end of the nut is chamfered off on the outside as at 22 so as to form an annular air space. Into this air space open the grooves 23 which run lengthwise the lower section of the cylinder and into which open the ports 24 that communicate with the interior of the cylinder and act as exhaust passage ways. It will be readily seen that the exhaust air or driving agent leaving the cylinder is free to pass through these longitudinal grooves into the annular space formed by the chamfered edge of the nut. From this space passage ways 25 lead to grooves 26 of the nut 20. This allows the air or driving agent to discharge parallel with the cylinder and at the end where the hammer protrudes, so as to allow the adjustment of the cylinder with respect to the holder.

Referring to Fig. 1, the bottom of the cylinder will be seen in the sectioned portion that is shown by the breaking away of the cylinder. The bottom is provided with intake ports 27 through which the air passes to the interior of the cylinder to operate the hammer in the conventional way. A leather packing ring 28 is screwed to the bottom of the cylinder and tends to prevent the leakage of the driving agent at the sides. 29 is a pin fixed to the bottom of the cylinder and which will, when the cylinder drops down, encounter the boss 30 on the bottom of the holder A and prevent the bottom of the cylinder contacting with the bottom of the holder. This always insures a chamber F at the bottom of the holder which is filled by the driving agent, which enters through the port 4, hence the entire area at the bo tom of the cylinder is subject to the pressure of the air or driving agent and this tends to thrust the ledge 19 against the end of the nut 20, regardless of the position of adjustment of this nut. The air, therefore, causes the cylinder to follow the adjustment of the nut 20. By adjusting the nut 20, the upper radius of the hammer may be varied for different sized pipes. This variation may be small. l Vhen it is desired to make a large variation the holder is attached to the other off-set of the coupler. The support comprises a casting 31 which is the base, an up right 32 and the upright 33 that are supported on the base. The upright 33 is a substantially square member having a central recess 34 which is conical. An I-beam 35 is supported by the upright 32 and is bent around into U-shape and bolted to the front upright 33. The I-beam is perforated along the sides as at 36 and the cross bar 37 is adjustable along the bent ends of the I-beam. The cross bar 37 and the I-beam 35 are pro vided with cap plates 38 and 39,respectively, which hold the bearing sleeves 40 and 41, respectively. The bearing sleeves 40 and 41 support the conduit 9 so that the same may rotate therein. This rotation is effected by the hand wheel 42 that has a hub 43 which is bored at one side (see Fig. 10). The conduit 9 is notched as at 44 (Fig. 6). By removing the cotter pin 45 (Fig. 10) the hand wheel 42 may be adjusted along the conduit so that the hub 43 in conjunction with the bearing sleeve 40 stops the tool when it is thrust into the pipe and hence this adjustment may be used to locate the hammer with respect to the flange so that the blows may be delivered to the pipe in a circle coinciding with the flange. The bearing sleeve 41 acts as a stop to prevent the tool from being pulled out of the pipe too suddenly and this sleeve may be adjusted by moving the crossbar 37 along the I-beam 35.

A ring 46 is bolted to the front upright 33 and has bolted to it near the bottom a pair of brackets 47 and 48. These brackets have a dove-tailed groove 49 (Fig. 9) in which may slide a block 50. This sliding is elfected by turning the bolt 51 which has a pair of collars that engage on either side of the bearing portion 52 of the bracket and which is threaded into the block 50. These blocks support the pipe-flange while the alining studs 53 (Fig. 11) enter diametrically opposite holes in the rim of the flange and thereby hold it in proper position. These alining studs 53 are carried on arms 54 which are adjustable vertically on the squared rod 55 by the set screws 56 which pass through the arm into the square hole that is milled in each arm. The squared rod 55 is cylindrical at each end and jour naled in the brackets 57. The spiral gear 58 is located on the upper end of the squared rod 55 and is in mesh with a worm 59 on the cross shaft 60. The latter is ournaled in the brackets 61 and 62 and has on its end a hand wheel 63. By adjusting the arms 54 with respect to the squared rod so as to get the proper locations for the arms with respect to the holes in the rim of the flange, the arms may be closed in upon the flange and the alining studs 53, driven into place by rotating the hand wheel 63.

lVhat I claim is 1. A pipe-expanding machine, having in combination, a support for holding a flange, a reciprocable striking tool revolub-ly held in said support and a hand wheel adjustable along the bearing portion of the striking tool so as to locate the circle of revolution of the striking tool by engaging with a fixed portion of the support, substantially as described.

2. In a pipe-expanding machine, a support for holding a flange provided with an alining device comprising a pair of arms adjustable vertically on a squared shaft, alining studs in the ends of the arms for engaging in holes of the flange rim and means for swinging the arms in upon the flange rim, substantially as described.

3. A pipe-expanding machine, having in combination, a support for a flange, a pipeexpanding tool revolubly held in said support and adjustable radially for lengthening or shortening the expanding member, and an adjustable connection between the expanding tool and the support for further adjusting the expanding tool radially, substantially as described.

4. A pipe-expanding machine, having in combination, a support for holding a flange, a pipe-expanding tool having a bearing member revolubly held in said support, the said tool being extensible or contractible radially and connecting means between the bearing member and the tool for also extending or contracting the radial extent of the tool, substantially as described.

5. A pneumatic tool, having in combination, hammer operating mechanism, a swiveling pipe line connected therewith for furnishing the operating medium, the said pipe line being connectible with the hammeroperating mechanism at more than one point for the purpose of giving said hammer varying radii of action, substantially as described.

(J. A pneumatic tool, having in combination, hammer-operating mechanism, a swiveling pipe line connectible therewith at a plurality of points for changing the radius of action of the operating mechanism and means for further adjusting the length of the operating mechanism, substantially as described.

7. A pneumatic pipe-expanding machine, having in combination, a support, a holder provided with an open end and provided with a. passage way open at two points, a

coupler provided with a passage way and adapted to be inverted to close one opening in the handle and open the other, a bearing forming an air passage wayand attached to the coupler, the said bearing being rotatably mounted in the said support and a hammer operable through the open end of the holder, whereby the radius of action of the hammer may be changed, substantially as described.

8. A pneumatic pipe-expanding tool,-having in combination, :a holder provided with a passage way, and openings to the exterior at two points, a coupler provided with a passage way and invertible to alternately close one opening of the holder passage Way and open the other to change the radius of action of the holder, a cylinder in said holder, means for adjusting the cylinder with respect to the holder, a hammer reciprocable by air in said cylinder, a bearing provided with an air passage way and attached to the coupler and a support in which said bearing is rotatably journaled, substantially as described.

9. A pneumatic pipe-expanding tool, having in combination, a holder provided with a passage way having two openings to the exterior, an invertible coupler provided with a passage way and arranged to be inverted to connect one opening of the passage way of the holder and to close the other for the urpose of changing the radius of action 0 the holder, a cylinder in two sections of unequal exterior diameter, a hammer reciprocable by air in the cylinder, a nut threaded into the interior of the holder for adjusting the outward projection of the cylinder, means for causing the cylinder to follow the nut when it is adjusted, a bearing provided with an air passage way and attached to the coupler and a support in which said bearing is rotatably journaled, substantially as described.

10. A pipe-expanding machine, having in combination, a support, a holder, a bearing connected with the holder and rotatably journaled in the support, a cylinder provided with a ledge and reciprocable in the holder, a nut having a threaded engagement with the holder and arranged to contact the ledge, the said nut adapted to adjust the outward projection of the cylinder and means by which the ledge may follow the adjustment of the nut, whereby the working radius of the machine is adjusted, substantially as described.

11. The combination with a support for holding a pipe flange into which may be fitted the end of a pipe, of an automatic striking tool of less diameter than the pipe that fits into the flange and arranged so that the striking member reciprocates in a plane at right angles to the axis of the pipe and means for supporting said striking tool revolubly within the said pipe so that its striking member may work in an annular path and perpendicularly to the axis of the pipe, substantially as described.

12. The combination with a support for holding a pipe flange into which may be fitted the end of a pipe, of an automatic striking tool, the said automatic striking tool being provided with means by which its length may be adjusted and being located in a plane at right angles to the axis of the pipe and means for revolubly supporting the said automatic striking tool so that its striking member may reciprocate in a line perpendicular to the axis of the pipe and may describe an annular path while performing its work, 15

substantially as described.

In testimony whereof, I sign this specification in the presence of two Witnesses.

JOHN I. PILSTON. Witnesses:

STUART C. BARNES, VIRGINIA C. SPRATT.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

